Superheater.



No. 65l,383. Patented'lune I2, |960. M. VDN POKRZYWNICKI.

SUPEBHEATER.

(Application med Feb. s, 190g.

v(No Model.)

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UNITED STATES i PATENT OFFICE.

MIECZYSLAVV VON POKRZYWNICKI, OF WARSAW, RUSSIA.

SUPERHEATER.

SPECIFICATION forming part ef Lettere Patent Ne. 651,383, dated June 12, 1900. Application filed February 3, 1900. Serial No. 3,787. (.No model.)

To all whom it may concern:

Be it known that I, lvIIEczYsLAw voN Po- KRzYwNIckr, engineer, a subject of the Emperor of Russia, residing at Aleje Terosolimskie No. 76, Varsaw, in the Russian Empire, have invented certain new and useful lmprovementsin Steam-Superheaters, of which the following is a specification.

The subject of the present invention is an improved apparatus for superheating steam.

The new steam-superheater is of iiat or disk form, the several parts or elements making up the complete superheater being divided into a series of chambers whereby the inrushing steam is rst divided into separate currents which stream directly between the walls of the chambers heated by the fire from the center of each element to the periphery and then back from the periphery to the center of the element. In this manner the passage of the steam is .prolonged and the action of the superheater rendered more effective without the use of a disk suspended in the middle of the space of each element, such as is usual in flat superheaters until now, and which disk not being in direct contact with the heated gases has a condensing action.

The invention is illustrated by the accompanying drawings. l

Figure l is a side elevation, partly in longitudinal section, and Fig. 2 a cross-section, of the improved superheater. l

As is shown on the drawings, the flat or disk-shaped elements a arebored at the center and are rendered steam-tight by being drawn together by a tie-bolt h. Each element ct is divided by partitions c into chambers d and e, into which shorter partitions f project. The chambers d and e communicate with each other near the periphery or circumference of each element. Near the center of the element the chambers d open into a central chamber g, while the chambers e of one element are connected with the chambers e of the adjacent element by apertures h.

The steam to be superheated enters through the pipe t' into the central chamber g of the first element a and separating in a radial direction into severalfor instance,four-cur rents rushes simultaneously into all the chambers d and between the walls of each element,

titions f of these chambers at the points 7c mix A with 'the subcurrents from'the other chambers d, and thus united flow back to the center of the element, as indicated by the arrows l, Fig. 2, finally flowing through the openings 7L to the chamber e of the Vnext element a. In this second element a the chambers e perform the same function as lthe chambers d of the rst element-that is, the currents of steam are here divided in the chambers e, mix together in the chambers d, and so on until the steam nally reaches the last element ct, and highly dried and superheated leaves the apparatus by the pipe m.

There may of course b e any number of chambers d and e in each element a, either a larger or smaller number than shown ou the drawings.

The elements ct may be advantageously manufactured in one piece of cast-steel, in whichcase the apparatus requires no attention whatever, there being no rivets, screws,

' orthe like.

The elements need not necessarily be' circular, as shown, but may be elliptical, polygonal, or other suitable form. y

A point of special importance, asI has already been pointed out, is that with the new apparatus there are no partition-walls in the elements a which do not stand in immediate connection with the surfaces directly in contact with the heated gases. rSuch partitionwalls always have a somewhat-lower temperature than the wallsdir'ectly exposed to the incandescent gases, and therefore act as condensers, thus being the cause of the decrease in the efficiency of ii'at superheaters as at present constructed.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A steam-superheater, consisting of a series of fiat, hollowelements, each comprising radiating-chambers d e communicating with IOO each other near the periphery of the element, a central chamber g communicating near the center of the element with the chambers d, apertures 7L connecting the other chambers e With the corresponding chambers of the adjacent element, and meansffor subdividing the currents of steam passinginto one set of chambers d or e and for directing the subcurrents of steam entering into the other set of chambers e or d, al1 substantially as hereinbefore set forth.

2. A steam-superheater, consisting of fiat, hollow elements, each comprising a central chamber g, chambers CZ communicating with said chamber near the center of thelelement,

near the periphery, and radial partitions f zo projecting from the peripheryr into said chambers d e at their Widest parts, all substantially as and for the purposes hereinbefore set forth.

Signed at Warsaw, Poland, this 184th day of 2 5 January, 1900.

` MIECZYSLAW VON POKRZYWNICKI. Vtnesses:

BoLEsDAW HoRoDYNIzI, ALEKSANDER Monoznnnoz. 

